feat: add battlefield grid editor and CI lint step

.github/workflows/ci.yml

@@ -25,3 +25,6 @@ jobs:
       - run: composer validate --strict
       - run: composer install --no-interaction --prefer-dist
       - run: composer check
+      - run: npm ci --no-audit --no-fund
+      - run: npm run lint
+      - run: npm run format